| A | B |
|---|
| geology | the study of the structure of the Earth or another planet, in particular its rocks, soil, and its hisory and origins |
| crust | thin, solid outer layer of the earth |
| % of water on earth | 70% |
| island | land surrounded by water |
| isthmus | narrow connecting strip of land that joins 2 larger areas of land |
| delta | a triangular deposit of sand and soil at the mouth of a river or inlet |
| lake | large body of water surrounded by land |
| magma | molten rock |
| faults | displacement in earth's crust |
| Continental Drift Theory | a theory that explains the formation, alteration and extremely alow movement of the continents across the earth's crust. The continents are thought to have been formed from 1 large landmass that split, drifted apart, and then collided again |
| Convection | transfer of heat through a fluid, liquid, or gass |
| Converging (2 types) | approuching each other |
| core | the center of the earth that is made of moltenrock, and an alloy of iron and nickel |
| continents | larg, continuous landmass that constitute most of the dry land on the surface of the earth |
| 4 major types of landforms | mountains, volcanos, plateaus, buttes |
| archipelago | a group or chain of islands |
| peninsula | strip of land projecting into water |
| gulf | inlet of sea |
| butte | flat topped hill |
| lava | molten rock flowing 4rm a volcano |
| plate tectonics | theory that ascribes continental drift, volcanic and seismic activity, and the formation of mountain belts to moving plates of the earth's crust supported on less rigid mantle rocks |
| Sea Floor Spreading | theory that suggests that the ocean floor is always moving |
| spreading | the extension, diffusion, or distribution of something over an area, range, or time |
| faulting | breaking |
| mantle | central part of earth between crust n' core |
| relief | elecations of land |
| strait | channel joining 2 seas |
| volcano | a mountain created by the despoition and accumulation of materials ejected from a vent in a center crater |
| sound | wide channel |
| canyon | deepn narrow valley w/steep sides |
| volvanism | volcanic activity |
| folds | bend in rock |
| Pangea | hypothetical ancient supercontinent that included all of the earth's major landmasses |
| Rift Valley | valley formed by faults |
| subducton | slide under and adjoining tectonic plate |
| Ring of Fire | area that has many volcanos in shape i huge ring |
